uros-db commented on code in PR #45978:
URL: https://github.com/apache/spark/pull/45978#discussion_r1559299218

@@ -0,0 +1,140 @@
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.spark.sql.catalyst.util;
+import com.ibm.icu.text.StringSearch;
+import org.apache.spark.unsafe.types.UTF8String;
+ * Static entry point for collation aware string expressions.
+ */
+public final class CollationStringExpressions {

Review Comment:
   and I believe calls such as: 
`CollationSupport.Contains.containsCollationAware(l, r, collationId)`
   would look / sound descriptive enough

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